Welcome to LookChem.com Sign In|Join Free

CAS

  • or

1219805-28-3

Post Buying Request

1219805-28-3 Suppliers

Recommended suppliersmore

  • Product
  • FOB Price
  • Min.Order
  • Supply Ability
  • Supplier
  • Contact Supplier

1219805-28-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1219805-28-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,9,8,0 and 5 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1219805-28:
(9*1)+(8*2)+(7*1)+(6*9)+(5*8)+(4*0)+(3*5)+(2*2)+(1*8)=153
153 % 10 = 3
So 1219805-28-3 is a valid CAS Registry Number.

1219805-28-3Downstream Products

1219805-28-3Relevant articles and documents

New insights into the synthesis and characterization of 2-methoxy-3-alkylpyrazines and their deuterated isotopologues

Schmarr,Sang,Ganss,Koschinski,Meusinger

scheme or table, p. 438 - 440 (2012/07/13)

A previously described synthetic route for preparation of 2-methoxy-3-alkylprazines (MPs) based on condensation of glyoxal with an α-amino acid amide, followed by methylation with iodomethane yields 3-alkyl-1-methyl-1H-pyrazin-2-ones (N-methyl derivatives), rather than the designated 2-methoxy-3-alkylpyrazines (O-methyl derivatives). Despite similar nuclear magnetic resonance and mass spectral properties, gas chromatographic (GC) retention indices differ significantly, indicating chemical difference. With the example of 3-sec-butyl-1-methyl-1H-pyrazin-2-one and its 3-sec-butyl-1-[2H3]methyl-1H-pyrazin-2-one isotopologue, the position of the methyl group introduced could be assigned unambiguously, using heteronuclear multiple bond correlation (HMBC) NMR experiments. For future characterization, the spectroscopic (NMR, EI+MS) as well as GC retention index data on two stationary phases of the most aroma relevant MPs and their deuterated isotopologues are summarized. Copyright

Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1

What can I do for you?
Get Best Price

Get Best Price for 1219805-28-3